2545490401 has 4 divisors (see below), whose sum is σ = 2679463600. Its totient is φ = 2411517204.

The previous prime is 2545490377. The next prime is 2545490419. The reversal of 2545490401 is 1040945452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2545490401 - 2⁷ = 2545490273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545490501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66986571 + ... + 66986608.

It is an arithmetic number, because the mean of its divisors is an integer number (669865900).

Almost surely, 2^2545490401 is an apocalyptic number.

It is an amenable number.

2545490401 is a deficient number, since it is larger than the sum of its proper divisors (133973199).

2545490401 is a wasteful number, since it uses less digits than its factorization.

2545490401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133973198.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 2545490401 is about 50452.8532493456. The cubic root of 2545490401 is about 1365.3913731473.

The spelling of 2545490401 in words is "two billion, five hundred forty-five million, four hundred ninety thousand, four hundred one".